(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

What is the definition of the phase (not phase shift) at some time t of a wave? Specifically, for a wave oscillating according to the equation

[tex]x=A\sin(\omega t + \phi),[/tex]

what is the the phase at some time [tex]t[/tex]?

2. Relevant equations

3. The attempt at a solution

Our book says the phase is [tex]\omega t + \phi,[/tex] while http://en.wikipedia.org/wiki/Phase_%28waves%29" [Broken] says that it can also be [tex]\omega t + \phi[/tex] modulo [tex]2\pi[/tex]. Which is right?

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# Homework Help: Phase of a wave

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